Yes: the immediate effects of nicotine in causing artery walls to contract are gone within a few hours after smoking. The impact of long-term smoking on vascular health begins to lessen within a few months of cessation, and by 10 years out the risks approach those of non-smokers. Of course, this depends on how long and how hard you have smoked, as well as your own genetic and other susceptibilities.
Answered 10/8/2014
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